Federal direct subsidized loans are based on financial need. The federal government pays the interest during in-school, grace and deferment periods. Federal direct unsubsidized loans are not based on financial need, and the federal government does not pay the interest for these loans. Students may choose to defer interest payments until repayment begins; however, the student is responsible for all interest that accrues.
1 Outdoor air pollution can cause ongoing throat irritation. Indoor pollution â tobacco smoke or chemicals â also can cause a chronic sore throat. Chewing tobacco, drinking alcohol and eating spicy foods also can irritate your throat.  Muscle strain.
Chewing tobacco could cause oral cancer, which may require treatments such as chemotherapy or radiation. The tongue, lips and gums are all targets for oral cancer in people who chew tobacco. Chewing tobacco is popular with many baseball players. Chewing tobacco is sometimes marketed as an alternative to smoking. Chewing tobacco may cause users to experience bad breath. Chewing tobacco.